From https://en.m.wikipedia.org/wiki/Subitizing https://en.m.wikipedia.org/wiki/Subitizing "Subitizing is the rapid, accurate, and confident judgement of numbe

From https://en.m.wikipedia.org/wiki/Subitizing https://en.m.wikipedia.org/wiki/Subitizing "Subitizing is the rapid, accurate, and confident judgement of numbers performed for small numbers of items. [...] The accuracy, speed, and confidence with which observers make judgments of the number of items are critically dependent on the number of elements to be enumerated. Judgments made for displays composed of around one to four items are rapid, accurate and confident."